#!/usr/bin/perl -w

use strict;

use Params::Validate qw(validate validate_with);
use Test::More tests => 5;

my $ucfirst_normalizer = sub { return ucfirst lc $_[0] };

sub sub1
{
    my %args = validate_with( params => \@_,
                              spec   => { PaRaMkEy => 1 },
                              normalize_keys => $ucfirst_normalizer
                            );

    return $args{Paramkey};
}

sub sub2
{
    # verify that normalize_callback surpresses ignore_case
    my %args = validate_with( params => \@_,
                              spec   => { PaRaMkEy => 1 },
                              normalize_keys => $ucfirst_normalizer,
                              ignore_case => 1
                            );

    return $args{Paramkey};
}

sub sub3
{
    # verify that normalize_callback surpresses strip_leading
    my %args = validate_with( params => \@_,
                              spec   => { -PaRaMkEy => 1 },
                              normalize_keys => $ucfirst_normalizer,
                              strip_leading => '-'
                            );

    return $args{-paramkey};
}

sub sub4
{
    my %args = validate_with( params => \@_,
                              spec   => { foo => 1 },
                              normalize_keys => sub { undef }
                            );
}

sub sub5
{
    my %args = validate_with( params => \@_,
                              spec   => { foo => 1 },
                              normalize_keys => sub { return 'a' },
                            );
}

ok( eval { sub1(  pArAmKeY => 1 ) } );
ok( eval { sub2(  pArAmKeY => 1 ) } );
ok( eval { sub3( -pArAmKeY => 1 ) } );

eval { sub4( foo => 5 ) };
like( $@, qr/normalize_keys.+a defined value/ );

eval { sub5( foo => 5, bar => 5 ) };
like( $@, qr/normalize_keys.+already exists/ );